| <!DOCTYPE html> |
| <script src="../../../../../resources/js-test.js"></script> |
| <style> |
| body { |
| height: 2000px; |
| width: 2000px; |
| } |
| </style> |
| |
| <script> |
| window.jsTestIsAsync = true; |
| |
| description("This test ensures that input driven user scrolls get cancelled\ |
| by non-input driven scrolls."); |
| |
| // From ScrollAnimatorCompositorCoordinator::RunState. |
| var IDLE = "Idle"; |
| var RUNNING_ON_COMPOSITOR = "RunningOnCompositor"; |
| var WAITING_TO_CANCEL_ON_COMPOSITOR = "WaitingToCancelOnCompositor"; |
| function isOrWillBeCancelled(node) { |
| var state = internals.getScrollAnimationState(node); |
| return state == WAITING_TO_CANCEL_ON_COMPOSITOR || state == IDLE; |
| } |
| |
| function runTest() { |
| if (document.scrollingElement.scrollTop == 0) { |
| requestAnimationFrame(runTest); |
| } else { |
| shouldBe("internals.getScrollAnimationState(document)", |
| "RUNNING_ON_COMPOSITOR"); |
| |
| // Programmatic scroll should cancel smooth scroll. |
| document.scrollingElement.scrollBy({top: 1, behavior: "smooth"}); |
| shouldBeTrue("isOrWillBeCancelled(document)"); |
| shouldBecomeEqual("document.scrollingElement.scrollTop < 40 && " + |
| "document.scrollingElement.scrollLeft == 0", "true", finishJSTest); |
| } |
| } |
| |
| onload = function() { |
| if (!window.eventSender || !window.internals) { |
| finishJSTest(); |
| return; |
| } |
| |
| // Turn on smooth scrolling. |
| internals.settings.setScrollAnimatorEnabled(true); |
| |
| document.scrollingElement.scrollTop = 0; |
| |
| // Scroll down 1 tick (40px). |
| eventSender.mouseMoveTo(20, 20); |
| eventSender.mouseScrollBy(0, -1); |
| |
| requestAnimationFrame(runTest); |
| } |
| </script> |
